Planar Antenna Technology for mm-Wave Automotive Radar, Sensing, and Communications

Schoebel, Joerg; Herrero, Pablo

doi:10.5772/7185

Cited by 18 publications

(10 citation statements)

References 13 publications

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“…However, the microstrip patch antenna has emerged as the leading topology choice due to its simple structure, low profile, ease of integration with systems, and low manufacturing cost [24]. A popular variant of the microstrip patch antenna is the microstrip series-fed patch antenna array [25][26][27][28]. e series-fed linear array is analyzed using the modified transmission line model.…”

Section: Design and Optimization Of Series-fed Microstrip Patchmentioning

confidence: 99%

From Antenna Design to High Fidelity, Full Physics Automotive Radar Sensor Corner Case Simulation

Chipengo

Krenz

Carpenter

2018

Modelling and Simulation in Engineering

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Advanced driver assistance systems (ADAS) have recently been thrust into the spotlight in the automotive industry as carmakers and technology companies pursue effective active safety systems and fully autonomous vehicles. Various sensors such as lidar (light detection and ranging), radar (radio detection and ranging), ultrasonic, and optical cameras are employed to provide situational awareness to vehicles in a highly dynamic environment. Radar has emerged as a primary sensor technology for both active/passive safety and comfort-advanced driver-assistance systems. Physically building and testing radar systems to demonstrate reliability is an expensive and time-consuming process. Simulation emerges as the most practical solution to designing and testing radar systems. This paper provides a complete, full physics simulation workflow for automotive radar using finite element method and asymptotic ray tracing electromagnetic solvers. The design and optimization of both transmitter and receiver antennas is presented. Antenna interaction with vehicle bumper and fascia is also investigated. A full physics-based radar scene corner case is modelled to obtain high-fidelity range-Doppler maps. Finally, this paper investigates the effects of inclined roads on late pedestrian detection and the effects of construction metal plate radar returns on false target identification. Possible solutions are suggested and validated. Results from this study show how pedestrian radar returns can be increased by over 16 dB for early detection along with a 27 dB reduction in road construction plate radar returns to suppress false target identification. Both solutions to the above corner cases can potentially save pedestrian lives and prevent future accidents.

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Section: Design and Optimization Of Series-fed Microstrip Patchmentioning

confidence: 99%

From Antenna Design to High Fidelity, Full Physics Automotive Radar Sensor Corner Case Simulation

Chipengo

Krenz

Carpenter

2018

Modelling and Simulation in Engineering

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“…The feed point inset of this element controls the global input reactance, so it can be used to improve the matching without much affecting the center frequency [6].…”

Section: Antenna Typementioning

confidence: 99%

Comparison of array antenna designs for 77GHz radar Applications

Dewantari

Jeon

Kim

et al. 2016

2016 Progress in Electromagnetic Research Symposium (PIERS)

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In this paper, two types of microstrip array antenna for radars operating at 77 GHz are presented. The first type of array antenna is 10 × 4 elements rectangular patch array antenna with overall size of 20.43 mm×7.83 mm. Unit element of this antenna type is a rectangular patch. Series-fed column of 10 unit elements are arranged into 10 × 4 arrays by implementing simple power divider structure. The second type of antenna is 12 × 4 elements leaf array antenna with overall size of 16.72 mm×10.75 mm. Unit element of the second antenna type is a rectangular patch that is inclined 45 • from the microstrip line axis. Twelve patches are arranged on both sides of the microstrip line and are connected directly at their corners. One additional patch at the end of the structure acts as a matching element. Array consisting of 12 × 4 unit elements are created by implementing simple power divider structure. Both types of antenna are combined with different types of waveguide-to-microstrip transition consist of two metal layers printed on a single dielectric substrate. The waveguide-to-microstrip transitions are fed by WR10 standard waveguide. The performances of both antennas are verified via simulations and measurements. The rectangular patch array antenna has 19.8 dB gain and 20 • × 10 • beam width at 77 GHz, while the leaf array antenna has 19.6 dB gain and 19 • × 11.6 • beam width at 77 GHz. Both types of antenna can be further developed as a reference for designing antenna for radar systems operating at higher frequencies, such as 94 GHz.

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“…Frequency-Modulated Continuous-Wave (FMCW) radar sensors based on analog or digital beamforming technology have been proven to be effective for avoidance of automotive collision or mitigation of collision damage. Investigation shows that instead of using microelectronic based analog or digital beamforming engines, if Rotman lens type passive beamformers can be used, the signal processing time as well as power consumption, size, integration complexity, and system building cost will be reduced significantly [1][2][3][4][5]. Several design approaches are available that propose using Rotman lens for automotive radar applications.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of a 77 GHz Rotman Lens on a High Resistivity Silicon Wafer Using Lift-Off Process

Attaran

Chowdhury

2014

International Journal of Antennas and Propagation

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Fabrication of a high resistivity silicon based microstrip Rotman lens using a lift-off process has been presented. The lens features 3 beam ports, 5 array ports, 16 dummy ports, and beam steering angles of ±10 degrees. The lens was fabricated on a 200 μm thick high resistivity silicon wafer and has a footprint area of 19.7 mm × 15.6 mm. The lens was tested as an integral part of a 77 GHz radar where a tunable X band source along with an 8 times multiplier was used as the RF source and the resulting millimeter wave signal centered at 77 GHz was radiated through a lens-antenna combination. A horn antenna with a downconverter harmonic mixer was used to receive the radiated signal and display the received signal in an Advantest R3271A spectrum analyzer. The superimposed transmit and receive signal in the spectrum analyzer showed the proper radar operation confirming the Rotman lens design.

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Planar Antenna Technology for mm-Wave Automotive Radar, Sensing, and Communications

Cited by 18 publications

References 13 publications

From Antenna Design to High Fidelity, Full Physics Automotive Radar Sensor Corner Case Simulation

From Antenna Design to High Fidelity, Full Physics Automotive Radar Sensor Corner Case Simulation

Comparison of array antenna designs for 77GHz radar Applications

Fabrication of a 77 GHz Rotman Lens on a High Resistivity Silicon Wafer Using Lift-Off Process

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